Treatment concerns Zircon is commonly heat-treated to produce blue and colorless varieties. As with any transparent gemstone, zircon can be fracture-filled to improve apparent clarity, but this ...

Amber is sometimes called “gold of the North.” Its warm luster is featured in beads, carvings, pendants, and cabochons, as well as decorative items like cups, bowls, snuff boxes, and umbrella handles.

A GIA report contains a full scientific and unbiased assessment of your diamond’s 4Cs. GIA tests every diamond submitted to establish its authenticity as a diamond and whether it’s been subjected to ...

Fine amethysts have been set in religious jewelry and royal crown jewels for ages. It was once considered equal in value to ruby, emerald, and sapphire.

Kunzite Journey of the StoneThis miner is handling a kunzite crystal at the Oceanview Mine in Pala, California, for the very first time since its formation. - Brendan Laurs Few people outside the gem ...

Lapis lazuli is a rock, which means it’s an aggregate of several minerals. This ancient gem contains three minerals in varying amounts: lazurite, calcite, and pyrite. Sometimes, it also contains one ...

这颗克什米尔蓝宝石拥有强烈的天鹅绒般蓝色。——摄影：Robert Weldon（罗伯特·韦尔登）/GIA。 蓝宝石是有色宝石三巨头之一，另外两种是红宝石和祖母绿。人们把这种坚固的宝石定为 九月生日石，它以实用性和浪漫气息吸引了众多珠宝买家。 红宝石和蓝宝石均属于刚玉矿物。红色的刚玉称为红 ...

Diamond is available in a range of sizes and qualities to fit every consumer's tastes. One of the first things most people learn about diamonds is that not all diamonds are created equal. In fact, ...

这颗产自巴西的 5.30 克拉祖母绿为略带蓝色的绿色。 — African, Brazilian, Colombian Gems, Inc. 友情提供 祖母绿具有许多特质，但有色宝石专业人士普遍认为祖母绿最重要的是颜色。 千百年来，祖母绿一直是有色宝石种类中标准的绿色宝石。 和其他有色宝石一样，它也需要训练有素的专业人士来鉴定其中 ...

GIA does not offer duplicate reports. If you have the report number and would still like to view the information on your report, you are able to view the report data through Report Check. If your ...

Heat treatment usually gives it a more bluish appearance. Aquamarine crystals are known to be large in size and relatively clean and well-formed, making them particularly valuable to collectors of ...

This jadeite "Peiyao" (Chinese Fu dog) represent mythological creatures that guard and protect celestial palaces and entrances. - Gift of Sophie Leu Jade has been cherished for thousands of years.